Erwin nelson wo



E. WOO'DWARD.

WRENCH.

(No Model.)

. Patented Mar. 26 1895.

INVEN Ton l'soa 705M? WITNESSES:

A TTORNEVJ UNITED STAT S PATENT OFFICE.

ERWIN NELSON WQODWARD, OF GROTON, NEIV YORK, ASSIGNOR TO WILLIAM L. PIKE, OF SAME PLACE.

WRENCH.

SPECIFICATION formingpart of Letters Patent No. 536,312, dated March 26, 1895. Applica i n filed December '1, 1894. Serial 110.531.0237. (No model.)

To all whom it mayconcern:

Be it known that I, ERWIN NELSON W001)- WARD, a citizen of the United States, and a resident of Groton, county of Tompkins, and State of New York, have invented certain new and useful Improvements in Wrenches, of which the following is a specification, reference being had to the accompanying drawings, forming a part thereof, in which similar letters of reference indicate corresponding parts in both figures.

This invention relates to wrenches particularly such as are used for grasping square, hexagonalorsimilarlyshaped wagon and other nuts of various sizes, and has for its object to provide a device of this character which will be simple, cheap, and perfectly operating, and which may be constructed of two malleable iron or other castings.

The invention consists in the novel construction and arrangement of parts hereinafter more fully described.

In the accompanying drawings: Figure l is a plan view of a device embodying my invention. Fig. 2 is a longitudinal section of the same taken upon the line 50-00.

In the practice of myinvention, Iconstruct a strip or plate of metal A, having at the rear end thereof an enlargement or head B, in the end and each side of which are formed rectangular openings orrecesses B, B B of different widths and depths. This head B serves a double purpose of enabling, without manipulation, the engaging of nuts which approximately fit either of the apertures B, B B and at the same time a more secure grasping or handling of the wrench, forming a bandle therefor and also acting as a knob to prevent slipping thereof from the hand.

At theopposite or forward end of the plate A is a curved and upwardly projecting intogral extension or arm 0, sectionally V-shaped to form shoulders Cb ranging diagonally at right angles to each other from the center of the forward end of the wrench.

From the forward end of the plate A to a pointbeyond the center thereof is formed, in the upper face of the plate, a longitudinal groove A, curved at the rear end thereof and of such width as to leave thin or shell-like side edges A the construction of the plate A and its arm 0 being such that the shoulders care of substantially equal thickness with, and in efiect a continuation of, the said side edges A Sliding upon the said edges A is a plate or section D having a central elliptical shoulder 19 upon the under face thereof, which slides in the groove A; and upon each side of said plate are formed outwardly extending and downwardly projecting flanges D which engage or clasp the outside of the edges A The sliding plate D has upon the forward end thereof an arm 0', shaped and constructed similarly to the arm 0, but having the shoulders at thereof projecting from their junction diagonally forward.

Extending through the center of the plate D and the shoulder b thereon is a square open ing 0, immediatly in alignment with which,

the plate A has formed therein at the bottomof the groove A an elongated slot 0. Through the opening 0, I inserta bolt E, having the upper portion (1 of its shank sectionally square, and surmounted by an enlarged flat head e, the remainder of the bolt being reduced in diameter and the lower half thereof screwthreaded. This latter portion of the bolt extends through, and slides longitudinally in, the slot 0 in the plate A, and has removably secured thereon athumb-nut F, having a flat and enlarged under face f to project beyond the edges of said slot and frictionally engage the plate A.

The operation of the device will be readily understood from the foregoing description taken in connection with the accompanying drawings. The thumb-nut F being loosened, the wrench is grasped by the handle or main portion of the plate A andthe head B, and the shoulders a of the arm 0 placed against the nut operated on to engage the same. The sliding plate D is then forced forwardly to bring the shoulders a thereon in engagement with the opposite portion of the nut, this sliding or reciprocation of the plate being effected either through the side flanges D or preferably by grasping the thurnb-nut F; and when the said plate D is projected as far as the size of the nut will permit, a single turn is given the said thumb-nut; which thereby clamps the said 'plate upon the edgesA and the shoulderb thereof against the base of the IOC groove A, said thumb-nut itself frictionally engaging the under surface of the plate A, thereby preventing any slipping or yielding of the plate D, whereupon the operation of turning the nut is performed in the usual manner. As before stated, the recesses B, B and B permit the turning, without manipulation of the wrench, of any nuts which 1 approximately fit either of the same, and thus the utility of the tool is enhanced.

The advantages resultant from the use of my invention will be manifest to all who are conversant with the general class of devices to which the same appertains.

I do not confine myself to the exact formation of parts or details herein set forth and illustrated.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. A wrench comprising a main body or plate, having an integral curved arm projecting upwardly therefrom at one end, and provided with angular, sectionally V-shaped shoulders arranged at right angles to each other, a longitudinal groove formed in said body from the end to center of the same, a slot formed in said body at the bottom of the groove, 2. smaller plate or section sliding upon the body,and having an integral upwardly projecting arm, provided with similar V-shaped opposing shoulders, longitudinal flanges upon each side of the section, clasping the edges of the plate, and an integral ellipticalshoulder upon the under surface thereof, sliding in the groove, said section and shoulder having an aperture projecting therethrough, a bolt inserted through said aperture and the slot in the plate, and a thumbnut mounted upon the bottom of the said bolt, and adapted to frictionally engage the under surface of the main body to secure the sliding section at any desired adjustment, substantially as shown and described.

2. A wrench comprising a plate or body, having an integral curved arm projecting upwardly therefrom at one end, and provided with angular, sectionally V-shaped shoulders, arranged at right angles to each other, a 1011- gitudinal groove formed in said body from the end to center of the same, a slot formed in said body or plate at the bottom of the groove, a smaller plate or section sliding upon the body, and having an integral upwardly projecting arm provided with similar V- shaped opposing shoulders, longitudinal flanges upon each sideof the section projecting downwardly and claspingthe edges of the plate, and an integral elliptical shoulder upon the under surface thereof sliding in the groove, said section and shoulder having a square aperture 'projecting therethrough, a bolt inserted through said aperture and the slot in the plate, having a square shank to prevent turning thereof, and a flat enlarged head, and a thumb-nut mounted upon the lower end of said bolt, projecting beyond the slot to engage theunder surface of the wrench body and secure the sliding section at any desired adjustment, said thumb-nut being adapted to serve as a handle to reciprocate the sliding section, substantially as shown and described.

3. A wrench comprising a plate or body having an integral curved armprojecting upwardly therefrom at one end and provided with angular, sectionally V-shaped shoulders, arrangedat right angles to each other, alongitudinal groove formed in said body from the end to center of the same, rounded at the rear, a slot formed in said body or plate at the bottom of the groove, and a flatintegral extension or handleupon-the rear end thereof, having varying nut-holes in each side thereof, a smaller plate or section sliding upon the body and having anintegral projecting arm provided with similar V-shaped opposing shoulders,longitudinal flanges upon each side of the section clasping theedges of the plate, and an integral elliptical shoulder upon the under facethereof, sliding in the-groove, said section and shoulder having a square aperture projecting therethrough, a bolt inserted through said apertureand the slot in the plate, having a square shank to prevent turning thereof andaflat enlarged head, anda thumbnut mounted upon the lower endof said bolt, projecting beyond the slot to engage the under face of the. wrench-body and secure the sliding section at any desired adjustment, substantially as shown and described.

In testimony that I claim the foregoing as my invention Ihave signed my name, in pres ence of two witnesses, this lth day of December, 1894.

ERWIN NELSON WOODWARD.

lVitnesses:

B. M. LAURENCE, G. A. NEWMAN.

ICO 

